Perforator attachment for printing-presses.



T. A. BREWER. PERFORATOR ATTACHMENT FOR PRINTING PRESSES.

APPLICATTON FILED NOV. 1.8 |916.

Patented Jan. 29, 1918.v

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THOMAS A.. BREWER, OF LOUISVILLE, KENTUCKY.

rEnronAToR ATTACHMENT ron. rmnTINGfrnEssEs.

Appncataminea-rrmremher1s,191e. semina. 132,214. o o

To all whom t may concern." Y

Be it known that I, TnonrAs A. BREWER, aV citizen of the United States,residing at Louisville, inthe county of Jefferson and State of Kentucky,have invented new and useful Improvements in Perforator Attachments forPrinting-Presses, of which the following is a specification. 1

This invention relates to a perforatoraattachinent for printing presses,the object of the invention being to provide a yperforaltor which may bereadily and `conveniently applied to the gripper lingers of a Gordontype of press for use, and which willoperate in a reliable and eiiicientmanner to perforate the stock. o

A further object of theinvention 1s to provide a perforator includingsupporting means which may-be employed for holding perforating devicesor blades of any s ize and at any point in the length of the gripers.

to provide a perforator embodying` Ineans for reliably withdrawing theperforating blade from the stock after an impression is made.

A still further object ofthe invention is to provide means forsupporting-the perforator blade in either a horizontal or verticalposition. v

The invention consists of the features of construction, combination andarrangement of parts hereinafter fully described and claimed, referencebeing had to the accomvpanying drawing in which Figure l is a frontelevation showing the application of the inventionto a pair of grippers.

Fig. the main supporting bar and` parts shown in Fig. 1.

Figs. 3, 4 and 5 arek vertical transverse sections on lines 3-3, `4 4and 5 5 of Fig. 1, Fig. fl showing in full and` dotted lines the normaland projected Ipositions of the perforating blade.

Fig. 6 is a perspectiveview of an auxiliary supporting bar forsupporting the blade in a vertical position.

ln carrymgn my invention into practice I Vthe platen.

A still further object of the invention-,Vis

2 is longitudinal section through o to extend horizontally between thegrippers 2 of the printing pressand provided with back-turned ends 3forming cutis or clips specification of Letters raient. Patented Jan.29, 118,'

to slidably engage vthe gr1ppers, each of said cuffs or clips beingprovided with a t `set screw 4, whereby theA bar may be disposedat anypoint in the length ofthe grip- 'o pers -to extend across the face ofthe platen when the parts of the press are disposed in position for animpresslon.

faces with a longitudinally extending dove- The bar. 1 is provided uponone of its' tailed guideway 5 which terminates atits end, short of tnecuffs 3, leaving intervening entrance Ways or passages 6. A narrow slot7 permits the p'erforating plate 11 to" projectthrough the sideoi' thebar opposite The entrance Aportion of the guideway 5l which is narrowerthan the ybase portion thereof is designated 8.

The bar 1 is adapted to supportthe car-l rier bar 9 which is adapted tofit within the guidewayand isprovided in its rear side with alongitudinally extending slit or recess v10 to the back edge of aperforator 11 which may be provided at its forward edge withperforatedteeth or projections 13, screws or other similar fastenings 13 beingprovided upon the bar 9 for engagement with the blade to detachably holdthe same in position. It is ofcourse to be understood that the bar 9 isadapted for vreceiving and holding perforator blades of differentlengths, as may be required in the case of thel perforator.

T he ends of the bar 9 are providedwith Y tongues or reduced portions 14to fit within sockets 15 in a pair ofholding blocks 16 provided withdove-tailed lugs or projections 17 to slidably engage the dove-tailedscrews 19 wherebyV the blocks will beheld These fastening members 18arein the form of hooks or lingers adapted to engage over one of thelongitudinal edges fof the bar 1 and are secured thereto by set persinposition for use the sidethereofprovided with the slot 7 is arrangedtofacethe formed bed-of the press, while `the opposite side thereof isarranged to face the platen, so that the bar 9, :will bedisposedfor-contact with the formed bed and the edged?JA :ofthe bladelll willextend throughthe slot.

7` for engagement with the p aper or stock upon the platen at themomentof impres sion.

*i The ends Hof the bar 9whi'ch vit within thesockets of the hollowblock 1.6 arear- Iranged to bear against*backingwsprings 20, 1 Ij"lem=.-

" '1; A. perforator attachment for printingwhich springs are disposedto'retain said bar and the perforator blade in 'normaler turn said partsto normal positionafterthe retractedposition while permitting thesame tobe forced forward for impression `by contact ofthe bar 9 with the formedbed-fof the prefssgrthe springs serving subsequentlyto reimpre'ssion ismade.

It will thus be understood thatjafter a .per-

forator-blade ofthe required length has beenapplied and'placed in thedesired posi- ,n

tion for use, vthe movement oftheparts of i); the press for theimpression action will bring ,the bar 9 in contact with the `formedbedand force the same rearwardly toward @the 'platen against the resistance"of, the

springs 2Ov` at the momentof impressiomlthus i projecting theper'forating 'edge of thiebl'ade rearwardly .to engagea@ `stockagiata@Yplaten. l. and lat the moment oflimpression, y whereby when thepartsof` the lpress move: away. from eachother after the impression ismadegthe springs 2OA iii reactingreturn @the bar 9 and blade il tonormal position,

and in so doing withdraw theblade from fgengagement with' the paper; fora positive vsepara-ting action. in the event that there Lshould be anytendency ofthe teeth :ofthe Y'blade to stick or hang in thek paperstock.

VIt'will be understood1` of course,-that the Ybar i maywbeidisposedatany elevation upon "the `grippers, and that one or more bars with theperforating attachments may be jemployed .for making a series 'ofperforated *9a and .bladel0 with a vertical position,l

1 porting bar 21 having a;y dove-tail guidei also provide a meansfoi-.supporting a perforated attachment coiisistingjof; the

such. means consisting ofvan auxiliarysupwayy'b, entrance-way 6a, atatleast one end jthereof, slot 7a, in which respects the bar.-Y-`21v-issimilar in construction tothe bar l,y

but l said bar 2l is provided at one end with Vmeansvfor engaging thebar 1 comprising a dove-tailed lug 22 to yfit within theV guideof thebar 4, said fingers being provided with a clamping screw 24 to secure itin po jsitioirw. This `.bar 21 inay'thus-be slidably ittedupon the bar l.to dispose. it in any .vertical position between. the grippers and isadaptedtoreceive the bar. 9 and blade 1l and the holding blocks 16 inthe same manmergas that previouslydescribed with refer Dpressescomprising a supporting bar having means-of attachment to thefpressgrippers, said bar being provided Vwith adoretailed guideway'openingtoward one side of 'the bar, and Said bar having a slot-inthevoppositeside" thereof communicatingwith Ythe guideway, a-carrieif'bar, aApe'rforator blade carried V*by Y said. V.bar and adaptedfto -fprojectthroughtheslot,I and-holders -providcdwith/dove-tailed members-engagingY Athe dove-tailed guidewayof the .supporting bar andmeans forresi-lien-tly mounting the carrier, bar;v in* the holders.`

y 2." A V`perfoijator-f-attachmentfor printing presses comprising aksupporting'bar adapted. for attachment to the press grippers, vsaidbarbeing provided with alongitudinal r` guidewayopening-'toward one'psideYof the bar7 and said bar having a slotinithe opposite sidethereofcommunicatingwith the guideway a-carrierbar, a perforatorbla-de4carried by the carrier bar and adaptedto project through the" slot,and'holding members engageable, with A the 4guideway `-in the supportingbar and-provided with means of attachment to said bar, saidlioldingmembers having sockctsto receive the endsof the vcarrier-bar`andsprings in, said sockets'arranged to permitv the carrierbar andVblade tobe moved in one-direction for making an impression and servingto returnsaidebar andblade to normal -position afterthe impression ismade.

3. A perforatorattachment for 4printing .presses comprisinga mainsupporting barV adapted to .extend horizontallybetween and to besecuredto a pair of grippers, said bar Vbeing Vprovided with alongitudinaliguideway opening ltoward one sideofthe bai-,-and said ,barhaving asslot ini the oppositeside thereof communicating with the-guideway, a carrier bar, and a perforatorbladecar .ried by thecarrier'bar-andadaptedffto project through theslot, and holding membersadapted to fit withinlthe gu'ideway-andpro-V vided with means "ofattachment tol` the .Sup-

porting bar and adapted to engage and hold the main supporting bar andwith means for the carrier bar, and an auxiliary supportfastening itthereto, whereby the carrier ing bar provided with a guideway and slotsbar and blade last named may be supported 10 similar to the mainsupporting bar to refrom the main supporting bar in a vertical ceive andsupport a carrier bar, blade and position.

holding members, and provided at one end In testimony whereofI aiix mysignature. with a projection to engage the guideway n THOMAS A. BREVER.

Copies of this patent may 'be obtained for five cents each, byaddressing the Commissioner of Patente,

Washington, D. C.

